M&S says

Comfort is key for school, and this plus size school dress comes cut with an extra 6cm for a more comfortable fit. Carefully designed from 100% cotton, this pretty gingham school dress comes in four colours and features short puffed sleeves and a scalloped trim for a charming finish. Cool Comfort™ technology wicks moisture from the skin to keep busy kids cool on the playground or while studying in class.

Care and Composition

35 days to return
You may return unused products within 35 days of purchase with a valid parcel summary document. Your items don't need to be in the original box or bag as long as they're securely packaged.

How to return
Simply use our returns portal to print a returns label and returns note. You will then be able to return all or part of your order at your own cost through your preferred carrier. To create a returns label, visit our returns portal select this option and follow the instructions.

* 20% off promotion applies at checkout: 20% off full price clothing, shoes and homeware. Offer commences 18/03/2019 at 8:00 am and ends 26/03/2019 at 7:59 am at www.marksandspencer.com/bn only. Promotion applies at checkout. Please check relevant delivery terms and conditions online. Cannot be used in conjunction with any other promotion, offer or discount code. Sale items are excluded. Offer does not apply to delivery charges. Any refunds will take into account the discount. M&S reserves the right to reject this offer with reasonable cause.